Omron E3S-R86 Retroreflective Optical Sensor - Equivalent & Substitute Parts

Part Overview

The Omron E3S-R86 is a retroreflective, polarized optical sensor designed for detection applications requiring adjustable sensing distances from 100mm to 1m. The sensor features PNP output with selectable Dark-ON/Light-ON operation, red light source (700nm), and operates across -25°C to 55°C. The E3S-R86 is classified as obsolete, making identification of functionally equivalent active alternatives necessary for new designs and ongoing system maintenance.

Key Parameters

Parameter	E3S-R86 Specification
Sensing Method	Retroreflective, Polarized
Sensing Distance	100mm ~ 1m (3.937" ~ 39.370")
Voltage Supply	10V ~ 30V
Output Configuration	PNP - Dark-ON/Light-ON Selectable
Light Source	Red (700nm)
Response Time	1ms
Connection Method	Cable
Ingress Protection	IEC IP67
Operating Temperature	-25°C ~ 55°C
Adjustment Type	Two-Turn Endless Adjuster

Substitute Part Grouping Explanation

The E3Z-B87 qualifies as a functional substitute based on the following alignment of critical parameters:

Matching Parameters:

Sensing method: Retroreflective (core detection principle maintained)
Output configuration: PNP with Dark-ON/Light-ON selectable operation
Response time: 1ms (identical performance)
Ingress protection: IEC IP67 (environmental sealing equivalent)
Operating temperature range: -25°C ~ 55°C (identical thermal specification)
Light source: Red wavelength (680nm vs. 700nm, within visible red spectrum)

Parameter Differences:

Sensing distance: E3Z-B87 extends to 2m versus E3S-R86 maximum 1m
Voltage supply: E3Z-B87 operates 12V ~ 24V (subset of E3S-R86 range 10V ~ 30V)
Connection method: E3Z-B87 uses connector versus E3S-R86 cable
Adjustment type: E3Z-B87 single-turn versus E3S-R86 two-turn endless adjuster
Product status: E3Z-B87 is active; E3S-R86 is obsolete

Parameter Comparison

Parameter	E3S-R86	E3Z-B87	Compatibility Notes
Sensing Method	Retroreflective, Polarized	Retroreflective	Both retroreflective; E3Z-B87 lacks polarization specification
Sensing Distance	100mm ~ 1m	2m	E3Z-B87 provides extended range; suitable for applications within 1m envelope
Voltage Supply	10V ~ 30V	12V ~ 24V	E3Z-B87 voltage range is subset; verify supply compatibility
Output Configuration	PNP - Dark-ON/Light-ON Selectable	PNP - Dark-ON/Light-ON Selectable	Functionally equivalent
Light Source	Red (700nm)	Red (680nm)	Both red spectrum; wavelength difference negligible for retroreflective applications
Response Time	1ms	1ms	Functionally equivalent
Connection Method	Cable	Connector	Different interface; installation method adjustment required
Ingress Protection	IEC IP67	IEC IP67	Functionally equivalent
Operating Temperature	-25°C ~ 55°C	-25°C ~ 55°C	Functionally equivalent
Adjustment Type	Two-Turn Endless Adjuster	Single-Turn	Different adjustment mechanism; E3Z-B87 offers faster calibration

Engineering Selection Recommendations

The E3Z-B87 is the designated substitute for the obsolete E3S-R86 based on product status and functional alignment. The E3Z-B87 is active and carries RoHS Compliance certification, meeting current regulatory requirements for new installations and system redesigns.

Selection Criteria:

For applications within 1m sensing distance: The E3Z-B87 extended 2m range does not compromise performance in shorter-distance applications.
For 12V ~ 24V supply systems: Direct voltage compatibility exists. Systems requiring 10V or 25V ~ 30V operation require power supply adjustment.
For connector-based installations: The E3Z-B87 connector interface requires mechanical redesign compared to the E3S-R86 cable connection.
For rapid field calibration: The E3Z-B87 single-turn adjuster provides faster setup than the E3S-R86 two-turn endless adjuster.

Frequently Asked Questions (FAQ)

Q: Can the E3Z-B87 directly replace the E3S-R86 in existing installations?

A: Functional substitution is possible with mechanical and electrical interface modifications. The E3Z-B87 connector interface differs from the E3S-R86 cable connection, requiring installation redesign. Verify supply voltage compatibility within the 12V ~ 24V range.

Q: What is the impact of the 20nm wavelength difference (700nm vs. 680nm)?

A: Both wavelengths operate within the red spectrum and are suitable for retroreflective sensor applications. Retroreflective tape response is consistent across this wavelength range.

Q: Does the E3Z-B87 extended 2m range affect performance in 1m applications?

A: No. The E3Z-B87 operates within the E3S-R86 1m envelope without performance degradation. Extended range capability does not impact shorter-distance operation.

Q: What supply voltage adjustment is required for systems operating at 10V or above 24V?

A: Systems operating at 10V require external regulation to the E3Z-B87 minimum 12V. Systems requiring 25V ~ 30V operation require external voltage reduction to the E3Z-B87 maximum 24V.

Q: Is the E3Z-B87 RoHS compliant?

A: Yes. The E3Z-B87 carries RoHS Compliance certification, meeting current environmental and regulatory standards for component procurement.

Q: How does the single-turn adjuster on the E3Z-B87 compare to the two-turn endless adjuster on the E3S-R86?

A: The E3Z-B87 single-turn adjuster provides faster calibration and setup. The E3S-R86 two-turn endless adjuster offers finer adjustment resolution. Application requirements determine which adjustment mechanism is appropriate.

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